lavfi: add a QSV scaling filter

Changelog

@@ -59,6 +59,7 @@ version <next>:
 - G.729 raw demuxer
 - MagicYUV decoder
 - Duck TrueMotion 2.0 Real Time decoder
+- Intel QSV video scaling filter
 
 
 version 11:

configure

@@ -2409,6 +2409,7 @@ interlace_filter_deps="gpl"
 ocv_filter_deps="libopencv"
 resample_filter_deps="avresample"
 scale_filter_deps="swscale"
+scale_qsv_filter_deps="libmfx"
 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
 
 # examples

libavfilter/Makefile

@@ -75,6 +75,7 @@ OBJS-$(CONFIG_PAD_FILTER)                    += vf_pad.o
 OBJS-$(CONFIG_PIXDESCTEST_FILTER)            += vf_pixdesctest.o
 OBJS-$(CONFIG_SCALE_FILTER)                  += vf_scale.o
 OBJS-$(CONFIG_SCALE_NPP_FILTER)              += vf_scale_npp.o
+OBJS-$(CONFIG_SCALE_QSV_FILTER)              += vf_scale_qsv.o
 OBJS-$(CONFIG_SCALE_VAAPI_FILTER)            += vf_scale_vaapi.o
 OBJS-$(CONFIG_SELECT_FILTER)                 += vf_select.o
 OBJS-$(CONFIG_SETDAR_FILTER)                 += vf_aspect.o

libavfilter/allfilters.c

@@ -98,6 +98,7 @@ void avfilter_register_all(void)
     REGISTER_FILTER(PIXDESCTEST,    pixdesctest,    vf);
     REGISTER_FILTER(SCALE,          scale,          vf);
     REGISTER_FILTER(SCALE_NPP,      scale_npp,      vf);
+    REGISTER_FILTER(SCALE_QSV,      scale_qsv,      vf);
     REGISTER_FILTER(SCALE_VAAPI,    scale_vaapi,    vf);
     REGISTER_FILTER(SELECT,         select,         vf);
     REGISTER_FILTER(SETDAR,         setdar,         vf);

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  6
-#define LIBAVFILTER_VERSION_MINOR  4
+#define LIBAVFILTER_VERSION_MINOR  5
 #define LIBAVFILTER_VERSION_MICRO  0
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \